The EMDR protocol follows procedures and phases described by Shapiro (1996). This is a complex treatment that incorporates many different interventions in order to recall trauma-related memories and to subdue them. EMDR processing consists of attending to oscillatory stimulation presented in a visual, auditory or tactile modalities, such as moving the finger from side to side across the patient's visual field or presenting an alternating tapping on the hands alternatively. Eye movements are the most commonly used external stimulus, but if the patient has problems with this kind of stimulation, such as headaches or sensomotor deficits, the therapist chooses tapping as an alternative form of oscillatory stimulation with equivalent therapeutic efficacy. Relaxation sessions will follow the same structure as the EMDR sessions, including diaphragmatic breathing, progressive muscle relaxation, visualisation, cue-controlled relaxation, and rapid relaxation.